Free local MIDI idea generator

Generate. Lock. Mutate.

Start a scale-aware MIDI pattern from nothing, keep the parts that land, and reshape only the rest.

01 Set direction 02 Generate a pattern 03 Lock what works 04 Mutate and export

Direction

Set the musical boundaries

Every result is created locally. No account, uploads, or cloud generation.

Root note Scale Pattern role Length Rhythm feel Register

Quick starters

Complexity52% Phrase variation38% Tempo122 BPM

Current idea

Nothing generated yet

Choose a direction, then generate.

Your current draft is saved automatically in this browser.

Generate an idea to start editing.

Note Bar divisionView, edit, and play the full pattern.

Sound Loop

Controlled chaos

Lock the parts you want to keep

Develop the current notes with bounded changes. Locks keep the dimensions you choose.

Mutation amount38%

0% keeps the current idea. Higher amounts change more of its unlocked notes.

Refresh bar

Ready when you are.

Free scope: melody, bass, chords, and arps; style starters, register and rhythm controls; an editable piano roll with undo/redo; automatic recovery of the current draft; local audition; and MIDI export. Multi-track generation, arrangement mode, and project libraries remain Pro territory.